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Sillimanite-cordierite gneiss

A rock subtype
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00757980017271954166029.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
09326220017272054491121.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
01986200017272054515521.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
07529770017271954135834.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
09326220017272054491121.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
07660690017271954143836.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
00757980017271954166029.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
09326220017272054491121.jpg
Sillimanite-cordierite gneiss

Gütting, Unterlangau, Oberviechtach, Schwandorf District, Upper Palatinate, Bavaria, Germany
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About Sillimanite-cordierite gneissHide

A gneiss containing sillimanite and cordierite


Unique IdentifiersHide

Mindat ID:
470551
Long-form identifier:
mindat:1:1:470551:8

Classification of Sillimanite-cordierite gneissHide

Sub-divisions of Sillimanite-cordierite gneissHide

Mineralogy of Sillimanite-cordierite gneissHide

Essential minerals - these are minerals that are required within the classification of this rock:
CordieriteMg2Al4Si5O18
Feldspar > Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SillimaniteAl2(SiO4)O
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Silica > QuartzSiO2

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Sillimanite-cordierite gneiss associated with SpinelMgAl2O4

Internet Links for Sillimanite-cordierite gneissHide

References for Sillimanite-cordierite gneissHide

Reference List:

Localities for Sillimanite-cordierite gneissHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Germany
 
  • Bavaria
    • Upper Palatinate
      • Schwandorf District
        • Oberviechtach
          • Unterlangau
Dr. Günter Grundmann collection
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